How can Expert determine the minimum stop loss value ?
Are you referring to the Broker's "Stops Level"? If so, then you can use:
Stop level in points
A zero value of MODE_STOPLEVEL means either absence of any restrictions on the minimal distance for Stop Loss/Take Profit or the fact that a trade server utilizes some external mechanisms for dynamic level control, which cannot be translated in the client terminal. In the second case, GetLastError() can return error 130, because MODE_STOPLEVEL is actually "floating" here.
Minimal indention in points from the current close price to place Stop orders
thank u Fernando for ansuer
i have tried MarketInfo () with MODE_STOPLEVEL But it always returns 0